Finding the Fourth Proportional to 1,087.59, 1,499.67 and 694.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.59 : 1,499.67 = 694.47 : x
2. Step 2: Convert to fraction form
   1,087.59/1,499.67 = 694.47/x
3. Step 3: Cross multiply
   1,087.59x = 1,499.67 × 694.47
4. Step 4: Simplify right side
   1,087.59x = 1,041,475.82
5. Step 5: Solve for x
   x = 1,041,475.82/1,087.59
6. Step 6: Final answer
   x = 957.60